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The present-day Gila River in the Gila Box Riparian National Conservation Area in southeast Arizona. 

Both nature and nurture affect human obesity. For some people, and for some populations, the genetic tendency to become obese is not fulfilled because of their environment, the circumstances of their lives. But when those circumstances change, the genetic potential may be realised quickly, and lead to the medical issues that follow from obesity. An example that starkly illustrates this comes from the sunbaked desert south of Phoenix, Arizona.Read the rest “The Gila River People, Victims of Modernity”

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Our bones, teeth and hair carry in them an encrypted GPS log of where we’ve been. If you lived in Seattle through your childhood and moved to Chicago ten years ago, that is indelibly written there. There will also be a record of what you’ve eaten recently. Advances in the science and technology of reading that information are having an impact on forensics, anthropology and agriculture, among other pursuits. At the heart of that technology lies a fundamental property of matter, which is that many of the atoms that make up all of creation come in subtle variations, variations that we are able to detect with great precision.Read the rest “Your travels are Written in your body”